Chapter 2 - Working with Real Numbers

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Presentation transcript:

Chapter 2 - Working with Real Numbers Algebra Class Pds. 2 ,3, and 5 Wed. 09-30-08 Chapter 2 - Working with Real Numbers Correct and Collect Quiz 2: Chapter 2: Quiz 2 - Sections 2.3 and 2.4 Answer Questions 1-20 only. Cross out 21-24

Chapter 2 - Working with Real Numbers Algebra Class Periods 2 ,3, and 5 Tuesday 09-30-08 Chapter 2 - Working with Real Numbers Lesson Title: Ch. 2.6 Rules for Multiplication (pgs.70-74) Objective: To use rules and properties to find the products of real numbers.. CA Standards: 1, 4, 25, 25.1

Lesson Background: Students often confuse the new rules for multiplication with the rules for addition. Many students who would have added -5 and -3 correctly before might now say that “(-5) + (-3) is 8” because “two minuses make a plus.” … It is important to require students to use precise language as in the following. The product of two negative numbers is positive. 2. The sum of two negative numbers is a negative. 3. The product of a positive and a negative number is negative. 4. The sum of a positive and a negative number may be either positive or negative.

Guided Practice: “Oral Exercises” (pg Guided Practice: “Oral Exercises” (pg. 72) Sample problems to do together . Independent Practice: Classwork: “Written Exercises” (pgs 72-73) 2-30 Evens Follow the book examples and show all work. Due at end of class Homework: 1. “Written Exercises” (pgs 72-73) Pds. 2,3 1-15 Odds (pds. 2 and 3) Pd.6 : 1-29 Odds Follow the book examples and show all work 2. “Mixed Review” (Pg.73) 1-10 All